forked from OSchip/llvm-project
63 lines
2.4 KiB
LLVM
63 lines
2.4 KiB
LLVM
; RUN: opt %loadPolly -polly-stmt-granularity=scalar-indep -polly-print-instructions -polly-print-scops -disable-output < %s | FileCheck %s -match-full-lines
|
|
;
|
|
; Two PHIs, cross-referencing each other. The PHI READs must be carried-out
|
|
; before the PHI WRITEs to ensure that the value when entering the block is
|
|
; read.
|
|
; This means that either both PHIs have to be in the same statement, or the
|
|
; PHI WRITEs located in a statement after the PHIs.
|
|
;
|
|
; for (int j = 0; j < n; j += 1) {
|
|
; double valA = 42.0;
|
|
; double valB = 21.0;
|
|
;
|
|
; body:
|
|
; double tmp = valA;
|
|
; valA = valB;
|
|
; valB = tmp;
|
|
; A[0] = valA;
|
|
; }
|
|
;
|
|
define void @func(i32 %n, double* noalias nonnull %A) {
|
|
entry:
|
|
br label %for
|
|
|
|
for:
|
|
%j = phi i32 [0, %entry], [%j.inc, %for]
|
|
%valA = phi double [42.0, %entry], [%valB, %for]
|
|
%valB = phi double [21.0, %entry], [%valA, %for]
|
|
store double %valA, double* %A
|
|
%j.cmp = icmp slt i32 %j, %n
|
|
%j.inc = add nuw nsw i32 %j, 1
|
|
br i1 %j.cmp, label %for, label %exit
|
|
|
|
exit:
|
|
br label %return
|
|
|
|
return:
|
|
ret void
|
|
}
|
|
|
|
|
|
; CHECK: Statements {
|
|
; CHECK-NEXT: Stmt_for
|
|
; CHECK-NEXT: Domain :=
|
|
; CHECK-NEXT: [n] -> { Stmt_for[i0] : 0 <= i0 <= n; Stmt_for[0] : n < 0 };
|
|
; CHECK-NEXT: Schedule :=
|
|
; CHECK-NEXT: [n] -> { Stmt_for[i0] -> [i0] : i0 <= n; Stmt_for[0] -> [0] : n < 0 };
|
|
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
|
|
; CHECK-NEXT: [n] -> { Stmt_for[i0] -> MemRef_valA__phi[] };
|
|
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]
|
|
; CHECK-NEXT: [n] -> { Stmt_for[i0] -> MemRef_valA__phi[] };
|
|
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
|
|
; CHECK-NEXT: [n] -> { Stmt_for[i0] -> MemRef_valB__phi[] };
|
|
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]
|
|
; CHECK-NEXT: [n] -> { Stmt_for[i0] -> MemRef_valB__phi[] };
|
|
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
|
|
; CHECK-NEXT: [n] -> { Stmt_for[i0] -> MemRef_A[0] };
|
|
; CHECK-NEXT: Instructions {
|
|
; CHECK-NEXT: %valA = phi double [ 4.200000e+01, %entry ], [ %valB, %for ]
|
|
; CHECK-NEXT: %valB = phi double [ 2.100000e+01, %entry ], [ %valA, %for ]
|
|
; CHECK-NEXT: store double %valA, double* %A, align 8
|
|
; CHECK-NEXT: }
|
|
; CHECK-NEXT: }
|